A list of choking hazard that you probably never thought of. This list I found is quiet intereting.

1.grapes
2.blueberries
3.hot dog pieces
4.Kix or other round cereal puffs
5.Skittles, M&Ms, or round candy pieces (not that you’re giving it to your baby but if someone else is enjoying them, they are likely to find them around somewhere)

6.ball bearings (like in Magnetix or MagneBlocks)
7.marbles (in several kids’ games)
8.Rokenbok balls
9.Lego heads, wheels, and tires
10.stringing beads (or beads on little girls’ accessories)

Other than small round things, here are my other top chokers at mealtime until the kids can chew well:
1.bread
2.bagels
3.chicken nuggets
4.chips or crispy things
5.popcorn, rice cakes, or flaky things
6.wheat thins or hard crackers
7.peanut butter
8.banana (have to keep it in small bits)
9.apple pieces
10.carrots
11.cut up steak, chicken or stringy things